Hello~Yes, many labs have different values and when there is such a small deviation such as the one are talking about, I wouldn't worry.
You can get rid of high potassium in the body naturally by drinking more water, drinking less milk and less fruit juice, and sticking with an overall low-potassium diet.
Potassium Lowering Cooking Tips:
1.Vegetables and potatoes should be cut up into small pieces and boiled in plenty of water as this reduces their potassium content. ...
2.Once boiled, vegetables and potatoes can be fried, roasted or added to casseroles.
3.Try to avoid vegetables which have been cooked by steaming or microwaving.
I hope this helps some.
I assume you say you're using an IP6 supplement, but what else do you consume that might be very high in potassium? Is your doc worried? If you are taking that supplement, it is made from inositol, part of the Vitamin B complex in most supplements, and a form of phosphorus.